print(3 == 3)
print(3 != 3)
print(3 >= 3)
print(3 <= 3)
print(3 < 3)
print(3 > 3)

print('-' * 10)

print('3' == 3)  # False
print(3.0 == 3)  # True
print(True == False)  # False
print('acs' > 'ah2')  # False
# ord() 可以查看字符的ascii码值
print(ord('2'))  # 50